Research And Design Of Wireless Power Supply Device For Home Electronic Equipment

With the development of the smart phone, it has become an indispensable part of our daily life. However, the large screen and intelligent electronic equipment has led to excessive consumption of battery. With the emergence of wireless power transmission technology, electronic equipment is getting rid of the shackles of the charging line, the range of mobile electronic devices is greatly improved.First of all, this paper studies the transmission mechanism of MCR-WPT system based on the series-series structure as the basic circuit topology, and deduces the formula of transmission efficiency. This paper analyzes the transmission characteristics of series-series and series-parallel by using Pspice simulation software from different aspects, such as frequency, coupling coefficient, load and loop resistance.Secondly, this paper introduces the composition of wireless power transmission equipment, which comprises a DC power supply, signal generator,inverter circuit, transmitting coil and receiving coil and the rectifier filter regulator circuit etc. The selection of each part and the corresponding part of the design is described in this paper.Thirdly, the paper tests the designed MCR-WPT system, and the experimental data obtained are in close agreement with the theoretical analysis results. This verifies the correctness of the designed system.Through optimizing the entire system constantly, the designed wireless power transfer system eventually realized a system which can supply the power for the electrical device when the transmission distance is 18 cm and the frequency is under 200 k Hz. The efficiency of this system is around 40%.